Home / 19,505.38-29,274.48-18,275.20

Finding the Fourth Proportional to 19,505.38, 29,274.48 and 18,275.20

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Solution

The fourth proportional to 19,505.38, 29,274.48 and 18,275.20 is: 27,428.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,505.38 : 29,274.48 = 18,275.20 : x
  2. Step 2: Convert to fraction form
    19,505.38/29,274.48 = 18,275.20/x
  3. Step 3: Cross multiply
    19,505.38x = 29,274.48 × 18,275.20
  4. Step 4: Simplify right side
    19,505.38x = 534,996,976.90
  5. Step 5: Solve for x
    x = 534,996,976.90/19,505.38
  6. Step 6: Final answer
    x = 27,428.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.